HÀ NỘI — Việt Nam’s listed steel companies can achieve higher growth in 2017 despite a volatile andpredictable international market if they optimise operations and exploit missing links in the sector’s supply chain, experts said yesterday.
Given recent international developments, global markets are likely to exhibit some signs of volatility andinstability, Đặng Trần Hải Đăng, deputy head of market research at theVietinbank Securities Company, said at a conference held in Hà Nội.
He said factors that investors and steel companies should pay attention to include uncertain US policies under the Trump administration, theslowdown of China’s economy and the Britain’sexit from the European Union.
These factors indicate unclear prospects for the global economy this year, he said, citing areport of the International Monetary Fund (IMF) that has forecast global economic growth this year at just 3.4 per cent.
The Vietnamese economy will also face a lot of challenges when the US Fed raises its lendingrates, putting pressure on the Vietnamese đồng to depreciate so as to make local products more competitive, Đăng said.
In addition, Brexit and the US’swithdrawal from the Trans Pacific Partnership (TPP) are likely to negativelyimpact Việt Nam’sexports, he added.
Nguyễn Văn Sưa,Vice Chairman of the Việt Nam Steel Association, said that the global steel industry has been through ups and downs since the middle of the 20th century, as can be seen by growth rates in different periods.
The industry’s annual growth rate was 5.1-7.4 per cent during 1950-1970, 0.5-2.5 percent in1970-2000; 6.2 per cent in 2000-2005; 4.5 percent in 2005-2010; 2.5 per centin 2010-2015; and 2.9 per cent in 2015.
In 2016, the global steel sector saw a slight recovery but there was still a surplus in the market with the production reaching nearly 1.63 million tonnes, a year-on-yearincrease of 0.5 percent, compared to a consumption volume of 1.5 million tonnes.
China was the top producer with 808.4 million tonnes, ahead of other countries like Japan,India and the US.
Sưa said that one of the main reasons that helped China’ssteel products become more competitive was preferential tax policies designedto boost export volumes.
He said Việt Nam’s steel producers have not optimised their production capacity and have not met themarket’s demand for some products like hot-rolled coil steel, leading to thestrong increase in steel and steel product imports. In 2016, total steel imports rose 25 percent year-on-year to 17.5 million tonnes.
Despite all the challenges, there are still positive signs for the prospects of the steelsector and steel companies’ shares in 2017, Sưa said.
There are plenty of opportunities for local steel companies if they can apply a closed production system to reach maximum production capacity, reduce production costs and assure high product quality to make their products more competitive.
They should also explore missing links in the sector’s value chain to reduce the volume ofimported steel products, and diversify their product base, he said.
In general, listed steel companies have recovered after 2015, with profits growing 70 to 130 percent.
Hòa Phát Group and Hoa Sen Group are the two companies that have the top profitability ratio,while Nam Kim Steel JSC and SMC Investment Trading JSC have the highestreturns-on-equity (ROE) ratios.
Listed steel companies had a robust year in 2016 with increasing combined marginal profitsand net profits. Some of the listed firms recorded outstanding profit growth, like the Hòa Phát Group (89 per cent), Hoa Sen Group (131 per cent) and Nam Kim Steel JSC (312 per cent).
In 2017, Việt Nam will seemore foreign capital flowing in as the country is one of the top 10 fastest growing securities markets in the world, the conference heard.
On March 8 thisyear, the VN Index reached a nine-year high of 716.6 points with a market average profitability rate of 18-20 per cent. The benchmark index has gained more than seven per cent since the beginning of the year with total market capital isation of $72 billion, an increase of 26.6 percent year on year.
Investors will also be attracted by the Government’s efforts to divest from State-ownenterprises and put those companies on the stock market, as also the low market price-to-earnings (P/E) ratio.
Viet Nam’s steel producers and traders will integrate deeper in the global industry, especially given that the Governmenthas signed 12 free trade agreements and is negotiating four others, Sưa said.
He said that there was still room for local steel companies to grow as Viet Nam still has a huge demandfor their products to develop its economy and infrastructure.
He forecast that the total volume of steel and steel products produced in the country will reach 50 million tonnes by 2020 and 73 million tonnes by 2025.
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Non-oil privatesector activity in Dubai dipped slightly last month from a high of 23 months that was recorded duringJanuary, but overall business conditions remained robust, according to a keyeconomy tracking gauge.
The Emirates NBD Dubai Economy Tracker Index fell to 56.2 in February from 57.1 in January.
A reading above 50indicates that the non-oil economy is expanding, while below 50 suggests thatit is contracting.
The gains in themeasure were driven by wholesale and retail, for the first time in six months.But while businesses were producing more, they were not hiring as much, thedata showed.
“The February Dubai Economy Tracker survey continues to show robust expansion in Dubai’s non-oil privatesector,” said Khatija Haque, head of Mena research at Emirates NBD.
“Strong growth in output and new orders, which points to solid GDP growth in Q1 2017,is not being reflected in higher employment, however, and competition continuesto weigh on selling prices. ”
Overall for the UAE, non-oil private activity was on the rise last month, according to the Purchasing Managers’ Index (PMI), sponsored by Emirates NBD, that was release dearlier this week.
The PMI survey,produced by IHS Markit, hit a 17-month high of 56 in February, up from 55.3 inJanuary.
Average selling prices rose for the first time in almost one-and-a-half years, as companies passed on to clients part of their additional costs to protect margins.
New business increased last month at its fastest rate since September 2015, and higherexport orders meant that companies raised output further. This in turn meantextra staff were hired, but the pace of job creation softened to its weakest infour months, according to the index.
The Minister of Economy, Sultan Al Mansouri, said this week that he expects GDP growth to reach3.5 to 4 per cent this year, boosted by higher oil prices and infrastructure projectsunder way ahead of Expo 2020.
That compares withgrowth of about 3.7 per cent last year, he said, a somewhat more sanguineassessment than those of independent economists such as the IMF.
While some datasuggest that the economy may be on the cusp of a rebound, many economists stillremain cautious about a full economic recovery in the short-term as oil pricesstill remain far below 2014 levels.
Standard Chartered reduced its UAE GDP growth forecast to 2.1 per cent this year from 3 per cent,but expects the economy to grow by 3.5 per cent in 2018, ahead of Expo 2020 in Dubai.
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The triple-eccentric butterfly valve employs a sealing system similar to a shut-off valve consisting of a fixed valve seat with the same conical cross-sectional shape and a rotatable sealing surface. However, the three-eccentric butterfly valve adopts a rotary motion (instead of an axial motion), and the shut-off is achieved by the vertebral body tilted with respect to the axis of the pipe at the tip of the cone, which makes the three-eccentric butterfly valve a “stop valve for the angular stroke”.
According to the design of the shut-off valve, a single momentary contact occurs only when the sealing element is in the closed position, which is why the tri-eccentric valve can realize frictionless closing. However, unlike the shut-off valve, the triple-eccentric valve can be fully closed in both directions. Its realization is based on three “eccentricity”:
1. The shaft is arranged behind the sealing surface, so that the valve obtains a complete continuous sealing surface.
2. The shaft is set on the side of the pipe/valve centerline and generates a cam effect. During the opening stroke, the seal ring and the valve seat are not in contact, effectively reducing the torque.
3. The centerline of the valve seat and the seal cone is inclined relative to the pipe/valve centerline, completely eliminating the friction between the seal ring and the seat in the 90° travel.
The design concept of a cone in the cone requires a hard metal seal to handle all possible pressure levels. High-strength Stellite Gr.21 seat overlays and a high-strength duplex stainless steel ply seal ring are used to achieve a hard metal seal.
The contact between the seat and the sealing ring is completely eliminated during the operation of the three-eccentric butterfly valve in the opening and closing, effectively extending the overall life of the sealing element and valve.This is combined with the characteristics of the valve’s angular travel to make the valve’s operating torque lower and more stable, and the valve moves faster and easier to operate.At the same time, the valve can be adjusted in a small Angle.This feature makes the three-eccentric butterfly valve ideal for all kinds of emergency shut-off, quick release or high frequency action applications.
Because the three-eccentric butterfly valve is the Angle stroke valve, the sealing element revolves around the axis, which can save the installation space of the site significantly and improve the performance of the operation significantly.In addition, the rotation of the angular travel also reduces the adverse effect on the packing, avoiding the extrusion of wear filler during the movement of the straight stroke valve stem, causing leakage.The three-eccentric butterfly valve can be operated by manual, electric, pneumatic and hydraulic operation, and it can be used as a control valve.
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The three eccentric butterfly valve is a new butterfly valve product. Prior to the advent of three eccentric butterfly valve, the most widely used industrial pipe was a soft-seal butterfly valve and a metal-seal butterfly valve with a single eccentric double eccentricity. Both types of butterfly valves have their own advantages, but they also have obvious shortcomings. Soft seal butterfly valve has the advantage of good sealing performance, can achieve zero leakage; the disadvantage is not suitable for high temperature and high pressure environment, not wear and tear. The advantage of the hard-sealed butterfly valve is that it can adapt to the conditions of high temperature and high pressure, but the sealing performance is poor. In order to solve the shortcomings of the two types of butterfly valves and better serve our production work, triple eccentric butterfly valves came into being and have been widely used.
The advantages of triple eccentric butterfly valve
Three eccentric butterfly valve also belongs to the metal hard seal butterfly valve, which is characterized by high temperature, corrosion resistant alloy material surfacing in the valve seat sealing surface layer, the multi-layer soft stack seal ring fixed on the butterfly board, such The process makes the three-offset butterfly valve more resistant to high temperature and high pressure than traditional butterfly valve products and is more resistant to corrosion. At the same time, because of the unique design of the three eccentricity, the valve is very easy to operate. When the valve is closed, the moment of the transmission mechanism increases to provide a compensation seal, greatly improving the three eccentricity. Butterfly valve sealing performance, while extending the life of the butterfly valve. What is the three eccentricity of three eccentricities?
The first eccentric: The valve shaft is located behind the valve plate shaft so that the seal can completely and tightly contact the entire valve seat.
The second eccentricity: The centerline of the valve shaft deviates from the centerline of the pipe and the valve, which is protected from the opening and closing of the valve.
3rd eccentricity: The seat cone shaft deviates from the centerline of the valve shaft.
This eliminates friction during closing and opening, and achieves a uniform compression seal around the entire seat.
Disadvantages of three eccentric butterfly valve
The perfect thing is more or less flawed and imperfect. The three-offset butterfly is no exception. Its disadvantages are the following two points:
1, the special process of the three eccentric butterfly valve, the structure of the butterfly plate will be relatively thick, so if the three eccentric structure of the butterfly valve on the small diameter pipeline, in the open state, the resistance of the butterfly plate for the flow medium in the pipeline will be very large, flow Large resistance, so in general the three eccentric butterfly valve is not suitable for DN200 below the small diameter pipeline.
2. In the normally open pipeline, the valve seat sealing surface of the three-offset butterfly valve and the level seal ring on the butterfly plate are subject to frontal flushing. A long time will affect the sealing performance of the valve.
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In this article, let’s talk about the installation method of the wafer butterfly valve. The wafer type is a connection method of the butterfly valve. When the pipe is installed on the pipe, two flanges are needed to clamp the butterfly valve first, and then the flange is connected with the flange on the pipe.
Corresponding to the butterfly valve is another connection, flanged. The installation of flanged butterfly valves will be shared with you in the future. Today, we mainly discuss how to install wafer butterfly valves through graphic and textual forms.
The structure of the wafer butterfly valve is short, take up the space is little，when installing, first use the special flange for the wafer butterfly valve to fix it, and then place the fixed wafer flange in the middle of the flanges at the two ends of the pipe, and use the bolt to pass through the special flange and pipe flange of the clip-on butterfly valve. By fixing it, the fluid medium in the pipeline can be controlled (if there is no flange on the pipeline, the special flange of the butterfly valve needs to be welded to the pipeline). The wafer butterfly valve’s small footprint makes it particularly suitable for applications where space is limited or where the distance between pipes is relatively small.
The specific installation steps of the wafer butterfly valve are as follows:
2. Insert the bolt and nut into the flange hole to connect the valve body with the flange. Correct the flatness in the method, but be careful not to over tighten the bolt and nut.
3, welding the flange on the pipe, this step to use spot welding.
4. Remove the wafer butterfly valve first.
5. Weld the two flanges completely to the pipe and complete the fixation.
6. After the flange is cooled with the welding section of the pipe, then the clamping butterfly valve shall be installed.Now notice that you want to open the butterfly plate.
7. Make a correction to the installation position of the butterfly valve and tighten the bolt, but be careful not to tighten it too tightly.
8. Fully open the butterfly valve butterfly plate to ensure that the butterfly valve butterfly plate can be opened and closed freely.
9. Once again, cross the bolt and tighten it evenly;
10. The above steps are completed. Once again, make a test of the opening and closing of the butterfly valve to ensure that the valve is free to switch.
The above is the butterfly valve installation procedure introduction, in this case also to all the friends who buy butterfly valve to say, before the installation of the wafer butterfly valve, the handling should be careful, not to be randomly touched.After installation, non-professional, do not disassemble randomly.
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In recent years, with the development of mechatronics, motorized valves, an important mechanical product, have ushered in an unprecedented market. Motorized valves are more source-saving and safer than conventional valves (manual valves, pneumatic valves). In the increasingly high demand for environmental protection and safety, motorized valves are indispensable. The huge market demand for motorized valves is also increasing.
The motorized valve has a wide range of applications, involving petroleum, chemical industry, electric power, nuclear energy, metallurgy, shipbuilding, light industry, food, municipal administration and so on. As far as the product itself is concerned, electric valves have the advantages of easy assembly, low failure rate, and compliance with the automation needs of the industry, making them a more cost-effective choice for the industry. Because the use of conventional pneumatic valves, inevitably there must be piping, solenoid valves and compressors to be successful. The electric valve is motor-driven, easy to install and save, and the electric valve installed with the factory’s original automatic control line can save other costs. In addition, the motor drive method is relatively smooth in opening and closing, and there is no short-term impulse overload, and the failure rate can be greatly reduced.
The petrochemical industry mainly uses API standard gate valves, globe valves and check valves; the power sector mainly adopts high-pressure valve, globe valve, check valve and safety valve for power station, and some low pressure butterfly valves and gate valves for water supply and drainage valves; the chemical industry mainly adopts them. Stainless steel gate valve, globe valve, check valve.
The metallurgical industry mainly uses low-pressure large-diameter butterfly valves, oxygen shut-off valves and oxygen ball valves; the urban construction sector mainly uses low-pressure valves, such as large-diameter gate valves mainly used in urban tap water pipelines, and the central line butterfly valve mainly used in building buildings, mainly used in urban heating. Metal seal butterfly valves, etc.; oil pipelines mainly use flat gate valves and ball valves; the pharmaceutical industry mainly uses stainless steel ball valves; the food industry mainly uses stainless steel ball valves.
New varieties of motorized valve is the valve industry, so the motorized valve market prospect is very broad, foundry enterprises should know more about the industry, provide casting parts for the industry, the emerging industry of motorized valve to driving the development of foundry industry, in order to obtain the new development momentum.
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If you’re new to the valve industry and know nothing about butterfly valves, this article will be helpful.What is a butterfly valve? If you are observing it, the butterfly valve is omnipresent in our production and even our lives.There are many places where butterfly valves are used.To give a very simple example, the tap that we usually see is to use the principle of a butterfly valve to make water. And off the water. See here if you suddenly realize, then look down.
What is the butterfly valve?The butterfly valve, also known as the flap valve, is a simple structure regulating valve for the switch control of the low-pressure pipe medium.The butterfly valve’s closure is called disc or butterfly plate, shape is disc shape.Its composition is also very simple, composed of body, stem, butterfly plate and sealing ring.Its composition is also particularly simple, consisting of a valve body, a valve stem, a butterfly plate and a seal ring. The working principle of the butterfly valve is also very simple. The rotation of the valve stem drives the butterfly plate to rotate. The butterfly plate rotates around the axis. The rotation angle is between 0 and 90 degrees.
When the disk rotates to 90 degrees, the valve is fully openThe common butterfly valve has two kinds of wafer butterfly valve and flange butterfly valve. The wafer butterfly valve uses a stud bolt to connect the valve between the two pipe flanges. The flanged butterfly valve is provided with a flange on the valve, and bolts are used to connect the upper flanges of the valve to the pipe flange.
The characteristics of the butterfly valve are obvious, the structure is simple, the volume is small, and the weight is light. It consists of only a few parts. It can be opened and closed quickly by simply rotating 90 degrees, and the operation is very simple.
When the butterfly valve is fully open, the butterfly plate thickness is the only resistance of the medium through the valve body. The pressure generated by the valve is very small, so the butterfly valve can control the flow of the medium well.
There are two kinds of butterfly valve seals, with elastic seal (soft seal) and metal seal (hard seal). Soft seal butterfly valve refers to the rubber seal inlaid on the valve body or attached around the butterfly plate. A hard-sealed butterfly valve has a longer life than a soft-seal butterfly valve, but it is difficult to completely seal it. Hard seals used in high temperature work environments, the defects of the soft seal is obviously limited by the temperature.
The structural principle of the butterfly valve is very suitable for large diameter valves. Now it has been widely used in petroleum, gas, chemical, water treatment and other general industries, and also applied to the cooling water system of thermal power plants.
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The butterfly valve is suitable for flow regulation, but if the material chosen is not correct or the working condition is not correct, it can not play its own advantage.So we need to select different butterfly valve types for different conditions.In this paper, some common situations are summarized and some specific suggestions are summarized.
1.In throttling, adjusting control and mud medium, the valve is required to have shortstructure length, quick opening and closing speed, and low pressure. Butterfly valve is recommended for this condition.
2.The butterfly valve can also be used in the medium of two-position adjustment, reducing channel, low noise, cavitation and gasification, and a small amount of leakage to the atmosphere.
3.Under special conditions, throttle regulation, or strict seal requirements, or seriouswear, low temperature / deep temperature and other operating conditions can be used butterfly valve. However, three eccentric or double eccentric butterfly valves are designed with specially designed metal seals, and the metal features stand out in high temperature and wear resistance.The specific working conditions are applicable to gas,oil, acid and alkali pipelines, such as urban heating, gas supply and water supply, as the regulating and throttling device.Metal triple eccentric butterfly valve is a good substitute for gate valve and globe valve.
4.The midline butterfly valve is common and widely applicable.It can be applied to fresh water, sewage, sea water, brine, steam, natural gas, food, medicine, oil and various acids and bases and other pipelines which are completely sealed, gas test leakage is zero,service life is high, and the working temperature is at -10 ~150 C.
5.Metallurgy, light industry, electric power, petrochemical industry system of gas pipeline and the water because of the high requirements for sealing, so soft seal eccentric butterfly valve is suitable for, mainly used in ventilation and dust removal pipe two-way opening and closing and regulation.
Considering the different working conditions, the most suitable butterfly valve product is chosen,and the butterfly valve is good atregulating flow, good sealing, and convenience of opening and closing.In addition to the choice of the model, according to the different media also should pay attention to the butterfly valve material selection to ensure good sealing and durability.If you want to know more about the butterfly valve, you can also visit the head office directly. We will have professional technicians to provide you with detailed solutions and communication.
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In the industrial field, especially in the petroleum industry, the application of stainless steel valves is indispensable. In the industrial field, the demand for valve products is becoming more and more stringent, which is a challenge but more good news for stainless steel valves.
The stainless steel valve is the control part in the pipeline fluid conveying system. It is used to change the direction of the channel section and the flow of the medium., regulation, throttling, check – back, shunt or overflow discharge.Over the past year, our stainless steel valves are both in quantity and quality.It has been greatly improved, the industry application and the market prospect are very broad, and in the next few years, it will develop in a larger and stronger direction.
Stainless steel valves are especially important in the industrial sector, especially in the high-end stainless steel valve industry.Part of it is worth developing.In addition, with the development of China’s petrochemical enterprises and nuclear power enterprises, there will be a lot of demand for the valve market.Thus it can be seen that the market of industrial stainless steel valve in our country is very broad.
In addition, the real estate industry, environmental protection industry, municipal, power and other industries in the increasingly extensive application, especially in the real estate industry and the continuous improvement of residents’ quality of life, for real estate enterprises use safer, more reliable and more durable valves, stainless steel valves have a very good place, the market demand is very big.Stainless steel is also very environmentally friendly and durable. It is a very easy to come into contact with in people’s life. Many tap water pipe valve users are willing to choose stainless steel valves.
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Five significant advantages of specifying Bkvalve ball valves: unique, patented zero leakage design; top quality manufacturing; long, reliable life cycle; ease of maintenance and repair; and enormous savings in labor, materials and downtime.
Bkvalve ball valves are ideal for severe service applications. Valves are available in ½” through 4” sizes with top entry, socket weld, buttweld, and flanged ends.All valves are manufactured in the U.S.A. to rigorous global QA qualifications including ISO 9001, PED, API Q1, and IBR.
For details, please contact Bkvalve, email firstname.lastname@example.org, or visit www.bkvalve.com
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